{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-17544",
        "assignerOrgId": "dd77f84a-d19a-4638-8c3d-a322d820ed2b",
        "state": "PUBLISHED",
        "assignerShortName": "php",
        "dateReserved": "2026-07-27T10:14:42.318Z",
        "datePublished": "2026-07-30T11:22:24.023Z",
        "dateUpdated": "2026-07-31T03:55:47.261Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "dd77f84a-d19a-4638-8c3d-a322d820ed2b",
                "shortName": "php",
                "dateUpdated": "2026-07-30T11:22:24.023Z"
            },
            "title": "Out-of-bounds write in bccomp() via crafted operand and scale",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-787",
                            "description": "CWE-787 Out-of-bounds write",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-100",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-100 Overflow Buffers"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "PHP Group",
                    "product": "PHP",
                    "packageName": "ext-bcmath",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "8.4.*",
                            "lessThan": "8.4.24",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "8.5.*",
                            "lessThan": "8.5.9",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Attacker-provided inputs to bccomp() could lead to an out-of-bounds write with stack and heap corruption in PHP versions from 8.4.* before 8.4.24 and from 8.5.* before 8.5.9.",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "<p>Attacker-provided inputs to bccomp() could lead to an out-of-bounds write with stack and heap corruption in PHP versions from 8.4.* before 8.4.24 and from 8.5.* before 8.5.9.</p>"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://github.com/php/php-src/security/advisories/GHSA-x692-q9x7-8c3f",
                    "tags": [
                        "vendor-advisory"
                    ]
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "HIGH",
                        "subIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subAvailabilityImpact": "NONE",
                        "exploitMaturity": "UNREPORTED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NO",
                        "Recovery": "NOT_DEFINED",
                        "valueDensity": "NOT_DEFINED",
                        "vulnerabilityResponseEffort": "NOT_DEFINED",
                        "providerUrgency": "NOT_DEFINED",
                        "version": "4.0",
                        "baseSeverity": "HIGH",
                        "baseScore": 8.1,
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:N"
                    }
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Recep Asan",
                    "type": "finder"
                },
                {
                    "lang": "en",
                    "value": "Ilija Tovilo - The PHP Foundation",
                    "type": "analyst"
                },
                {
                    "lang": "en",
                    "value": "Saki Takamachi - The PHP Foundation",
                    "type": "remediation reviewer"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "x_generator": {
                "engine": "Vulnogram 1.0.4"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-30T00:00:00+00:00",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3",
                                "id": "CVE-2026-17544"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-07-31T03:55:47.261Z"
                }
            }
        ]
    }
}